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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8924) Add pluggable interface for reading replicas in DFSClient
Date Sat, 22 Aug 2015 04:56:45 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14707844#comment-14707844
] 

Hudson commented on HDFS-8924:
------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #2223 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/2223/])
HDFS-8924. Add pluggable interface for reading replicas in DFSClient. (Colin Patrick McCabe
via Lei Xu) (lei: rev 7087e700e032dabc174ecc12b62c12e7d49b995f)
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/proto/datatransfer.proto
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Op.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/ReplicaAccessor.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/BlockReaderFactory.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/HdfsClientConfigKeys.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/ReplicaAccessorBuilder.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestExternalBlockReader.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Receiver.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/ExternalBlockReader.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/DfsClientConf.java


> Add pluggable interface for reading replicas in DFSClient
> ---------------------------------------------------------
>
>                 Key: HDFS-8924
>                 URL: https://issues.apache.org/jira/browse/HDFS-8924
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client
>    Affects Versions: 2.8.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>             Fix For: 3.0.0, 2.8.0
>
>         Attachments: HDFS-8924.001.patch, HDFS-8924.002.patch
>
>
> We should add a pluggable interface for reading replicas in the DFSClient.  This could
be used to implement short-circuit reads on systems without file descriptors, or for other
optimizations.



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